<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<!-- 
   full path: http://localhost:8080/testmvc/login
   
   relative path:
           current url:http://localhost:8080/testmvc/html/login.html
           targert url:http://localhost:8080/testmvc/test/login
           
           
           action="../login"
           
           
           current url:http://localhost:8080/testmvc/login.html
           targert url:http://localhost:8080/testmvc/login
           
           action="login"
 -->
        <form action="../test/login" method="post">
           <input type="text" name="username" />
           <input type="password" name="password" />
           <button type="submit">sigin</button>        
        </form>
</body>
</html>